<?php ############################ <license>GPL</license> #####################

/*

# this was originally implemented for Nanoweb, but can now be used
# within ewiki to enhance the download/upload plugin.
# As it was created from Debians mime-magic data, it is covered by
# the GNU GPL [http://www.gnu.org/]:

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

*/


$ewiki_plugins["mime_magic"][] = "ewiki_mime_magic";



function ewiki_mime_magic(&$binary_data) {

   global $mime_magic_data;

   $fd = substr($binary_data, 0, 3072);

   foreach ($mime_magic_data as $def) {

      if ($def[0] >= $f_read) {
         continue;
      }

      $pos0 = $def[0];

      if ($pos0[0] == ">") {

         $pos0 = substr($pos0, 1);

         if (strpos($fd, $def[3], $pos0) !== false) {

               return($def[4]);
         }

      }
      else {

         $part = substr($fd, $pos0, $def[1]);

         if ($mask = $def[2]) {

            $value = 1 * ('0x'.bin2hex($part));

            if (($value & $mask) == $def[3]) {

               return($def[4]);
            }

         }
         else {

            if ($part == $def[3]) {

               return($def[4]);
            }

         }
      }

   }

}





 $GLOBALS["mime_magic_data"] = array(
    array(0, 2, 0, "\x06\x02", "application/x-alan-adventure-game"),
    array(0, 4, 0, "TADS", "application/x-tads-game"),
    array(0, 2, 0, "\x01\x10", "application/x-executable-file"),
    array(0, 2, 0, "\x01\x11", "application/x-executable-file"),
    array(0, 2, 0, "\x01�", "application/x-executable-file"),
    array(0, 5, 0, "Core\001", "application/x-executable-file"),
    array(0, 22, 0, "AMANDA: TAPESTART DATE", "application/x-amanda-header"),
    array(0, 2, 0xfff0, 0xf0ff, "audio/mpeg"),
    array(4, 2, 0, "�\x11", "video/fli"),
    array(4, 2, 0, "�\x12", "video/flc"),
    array(0, 4, 0, "MOVI", "video/x-sgi-movie"),
    array(4, 4, 0, "moov", "video/quicktime"),
    array(4, 4, 0, "mdat", "video/quicktime"),
    array(0, 18, 0, "FiLeStArTfIlEsTaRt", "text/x-apple-binscii"),
    array(0, 3, 0, "\x0aGL", "application/data"),
    array(0, 2, 0, "\x76\xff", "application/data"),
    array(0, 6, 0, "NuFile", "application/data"),
    array(0, 6, 0, "N\xf5F\xe9l\xe5", "application/data"),
    array(0, 4, 0, "\x00\x16\x05\x00", "application/data"),
    array(0, 4, 0, "\x07\x16\x05\x00", "application/data"),
    array(257, 6, 0, "ustar\0", "application/x-tar"),
    array(257, 8, 0, "ustar\040\040\0", "application/x-gtar"),
    array(0, 2, 0, "q�", "application/x-cpio"),
    array(0, 2, 0, "�q", "application/x-bcpio"),
    array(0, 6, 0, "070707", "application/x-cpio"),
    array(0, 6, 0, "070701", "application/x-cpio"),
    array(0, 6, 0, "070702", "application/x-cpio"),
    array(0, 2, 0, "�m", "application/data"),
    array(0, 2, 0, "�e", "application/data"),
    array(0, 5, 0, "=<ar>", "application/x-ar"),
    array(0, 19, 0, "!<arch>\n__________E", "application/x-ar"),
    array(0, 3, 0, "-h-", "application/data"),
    array(0, 7, 0, "!<arch>", "application/x-ar"),
    array(0, 4, 0, "<ar>", "application/x-ar"),
    array(0, 4, 0, ">ra<", "application/x-ar"),
    array(0, 4, 0, "!<ar", "application/x-ar"),
    array(0, 4, 0, "\x00\x03��", "application/data"),
    array(0, 4, 0, "\x00\x03��", "application/data"),
    array(0, 4, 0x8080ffff, 0x81a, "application/x-arc"),
    array(0, 4, 0x8080ffff, 0x91a, "application/x-arc"),
    array(0, 4, 0x8080ffff, 0x21a, "application/x-arc"),
    array(0, 4, 0x8080ffff, 0x31a, "application/x-arc"),
    array(0, 4, 0x8080ffff, 0x41a, "application/x-arc"),
    array(0, 4, 0x8080ffff, 0x61a, "application/x-arc"),
    array(0, 8, 0, "\032archive", "application/data"),
    array(0, 2, 0, "�`", "application/x-arj"),
    array(0, 4, 0, "HPAK", "application/data"),
    array(0, 8, 0, "\351,\001JAM\   ", "application/data"),
    array(2, 5, 0, "-lh0-", "application/x-lha"),
    array(2, 5, 0, "-lh1-", "application/x-lha"),
    array(2, 5, 0, "-lz4-", "application/x-lha"),
    array(2, 5, 0, "-lz5-", "application/x-lha"),
    array(2, 5, 0, "-lzs-", "application/x-lha"),
    array(2, 5, 0, "-lh\40-", "application/x-lha"),
    array(2, 5, 0, "-lhd-", "application/x-lha"),
    array(2, 5, 0, "-lh2-", "application/x-lha"),
    array(2, 5, 0, "-lh3-", "application/x-lha"),
    array(2, 5, 0, "-lh4-", "application/x-lha"),
    array(2, 5, 0, "-lh5-", "application/x-lha"),
    array(0, 4, 0, "Rar!", "application/x-rar"),
    array(0, 4, 0, "SQSH", "application/data"),
    array(0, 4, 0, "UC2\x1a", "application/data"),
    array(0, 4, 0, "PK\003\004", "application/zip"),
    array(20, 4, 0, "�ħ�", "application/x-zoo"),
    array(10, 25, 0, "# This is a shell archive", "application/x-shar"),
    array(0, 4, 0, "*STA", "application/data"),
    array(0, 4, 0, "2278", "application/data"),
    array(0, 2, 0, "p\x01", "application/x-executable-file"),
    array(0, 2, 0, "q\x01", "application/x-executable-file"),
    array(0, 5, 0, "\000\004\036\212\200", "application/core"),
    array(0, 4, 0, ".snd", "audio/basic"),
    array(0, 4, 0, "\x00ds.", "audio/basic"),
    array(0, 4, 0, "MThd", "audio/midi"),
    array(0, 4, 0, "CTMF", "audio/x-cmf"),
    array(0, 3, 0, "SBI", "audio/x-sbi"),
    array(0, 19, 0, "Creative Voice File", "audio/x-voc"),
    array(0, 4, 0, "KRTN", "audio/x-multitrack"),
    array(0, 4, 0, "RIFF", "audio/x-wav"),
    array(0, 4, 0, "EMOD", "audio/x-emod"),
    array(0, 4, 0, "�ar.", "audio/x-pn-realaudio"),
    array(0, 3, 0, "MTM", "audio/x-multitrack"),
    array(0, 2, 0, "if", "audio/x-669-mod"),
    array(0, 3, 0, "FAR", "audio/mod"),
    array(0, 5, 0, "MAS_U", "audio/x-multimate-mod"),
    array(0x2c, 4, 0, "SCRM", "audio/x-st3-mod"),
    array(0, 22, 0, "GF1PATCH110\0ID#000002\0", "audio/x-gus-patch"),
    array(0, 22, 0, "GF1PATCH100\0ID#000002\0", "audio/x-gus-patch"),
    array(0, 2, 0, "JN", "audio/x-669-mod"),
    array(0, 4, 0, "UN05", "audio/x-mikmod-uni"),
    array(21, 8, 0, "!SCREAM!", "audio/x-st2-mod"),
    array(1080, 4, 0, "M.K.", "audio/x-protracker-mod"),
    array(1080, 4, 0, "M!K!", "audio/x-protracker-mod"),
    array(1080, 4, 0, "FLT4", "audio/x-startracker-mod"),
    array(1080, 4, 0, "4CHN", "audio/x-fasttracker-mod"),
    array(1080, 4, 0, "6CHN", "audio/x-fasttracker-mod"),
    array(1080, 4, 0, "8CHN", "audio/x-fasttracker-mod"),
    array(1080, 4, 0, "CD81", "audio/x-oktalyzer-mod"),
    array(1080, 4, 0, "OKTA", "audio/x-oktalyzer-mod"),
    array(1080, 4, 0, "16CN", "audio/x-taketracker-mod"),
    array(1080, 4, 0, "32CN", "audio/x-taketracker-mod"),
    array(0, 3, 0, "TOC", "audio/x-toc"),
    array(0, 2, 0, "\x07\x01", "application/x-executable-file"),
    array(0, 2, 0, "\x01\x06", "application/x-executable-file"),
    array(0, 2, 0, "\x06\x01", "application/x-executable-file"),
    array(0, 2, 0, "//", "text/cpp"),
    array(0, 5, 0, "\\1cw ", "application/data"),
    array(0, 4, 0, "\\1cw", "application/data"),
    array(0, 4, 0xffffff00, 0x140185, "application/data"),
    array(0, 4, 0xffffff00, 0xcb0185, "application/data"),
    array(0, 2, 0, "\x01}", "application/x-executable-file"),
    array(0, 2, 0, "\x01", "application/x-executable-file"),
    array(4, 4, 0, "pipe", "application/data"),
    array(4, 4, 0, "prof", "application/data"),
    array(0, 9, 0, "#!/bin/sh", "application/x-sh"),
    array(0, 10, 0, "#! /bin/sh", "application/x-sh"),
    array(0, 11, 0, "#!\   /bin/sh", "application/x-sh"),
    array(0, 10, 0, "#!/bin/csh", "application/x-csh"),
    array(0, 11, 0, "#! /bin/csh", "application/x-csh"),
    array(0, 12, 0, "#!\   /bin/csh", "application/x-csh"),
    array(0, 10, 0, "#!/bin/ksh", "application/x-ksh"),
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